on several products or services that will really help you
WordPress is the most used CMS in the world. If you are serious about blogging and want to have more control over your website then I can only recommend this free system.
As said the core is free and a good starting point. And there are also plenty of useful free and paid extensions for it available.
This is my favourite page builder for WordPress. Although there is no free version it is definitely worth to buy it.
There are lots of addons for it out there and it comes with a lot of helpful tutorials bringing your WordPress site to the next level.